BUILD: Upgrade to Cython 3

Author: zoj613

.github/workflows/release.yml

@@ -34,7 +34,7 @@ jobs:
 
       - name: Cythonize C-extensions
         run: |
-          python3 -m pip install --upgrade pip cython==0.29.*
+          python3 -m pip install --upgrade pip cython==3.0.*
           cythonize polyagamma/*.pyx
 
       - name: Build wheels
@@ -53,7 +53,7 @@ jobs:
       - name: Build source distribution
         if: ${{ matrix.os == 'ubuntu-20.04' }}
         run: |
-          python3 -m pip install --upgrade pip cython==0.29.* build
+          python3 -m pip install --upgrade pip cython==3.0.* build
           cythonize polyagamma/*.pyx
           python -m pip install build
           python -m build --sdist

polyagamma/_polyagamma.pyx

@@ -1,4 +1,3 @@
-# cython: language_level=3
 # cython: boundscheck=False
 # cython: wraparound=False
 # cython: nonecheck=False

requirements-dev.txt

@@ -1,4 +1,4 @@
-cython==0.29.36
+cython==3.0.*
 numpy==1.26.0
 pre-commit==3.4.0
 pytest==7.4.0

setup.py

@@ -16,7 +16,7 @@
     "src/pgm_density.c",
 ]
 
-macros = [('NPY_NO_DEPRECATED_API', 0)]
+macros = [('NPY_NO_DEPRECATED_API', 'NPY_1_7_API_VERSION')]
 if os.getenv("BUILD_WITH_COVERAGE", None):
     macros.append(('CYTHON_TRACE_NOGIL', 1))